Attachment for locks.



No. 724,899. PATENTED APR. 7, 1903.

A. W. LIVINGSTON."

ATTACHMENT FOR LOOKS. APPLICATION FILED JULY 8, 1902.

- H0 MODEL.

ya; Nonms Prrzl'as 00 FHOTO-LIYHQ. WAS-INGTON. n, c.

UNITED STATES P TENT OFFICE.

ANDREWW ILL IAM LIVINGSTON, OF ALAMEDA, CALIFORNIA.

ATTACHMENT FOR LOCKS.

SPECIFICATION forming part of Letters Patent'No. 724,899, dated April 7,1903.

Application filed July 8, 1902. Serial No. 11.4;800. (No model.)

To all whom it may concern:

Be it known that I, .ANDREW WILLIAM'LIV- INGSTON, a citizen of theUnited States, re-

siding at Alameda, county of Alameda, State the front edge of the door,adding to the appearance of the latter, allowing the door to closeeasily, and avoiding the projecting points which so frequentlycatch andtear the clothing.

It comprises details which will be more fully set forth hereinafter,having reference to the accompanying drawings, in which' Figure l is anelevation of part of edge of door, latch released. Fig. 2 is anelevation of part of edge of door, latch held back by dog. Fig. 3 is anelevation of part of side of door and door-jamb, showing button onlatter in contact with arm of dog, thereby holding up dog. Fig. 4 is aside elevation of door, latch held back by dog. Fig. 5 shows insidearrangement ofplate A. Fig. 6 is an elevation of part of the inner sideof end wall of lock, showing latch released. Fig. 7 is side view of partshown in Fig. 6 with latch held back by dog in notch.

The device comprises a plate or strap A, bent to fit over the edges ofthe door just above the latch 2. Within this plate is loosely pivoted atone end a drop .plate or dog 3, which is adapted to drop in front of andhold the latch when the latter has been retracted by turning the knob.Then when the door is open the front edge of the door presents a flusheven surface. The pivot end of the dog is slotted at 4 to form an armportion 5, which moves beneath the lower edge of plate A. Each end ofthe latter is in all respects the counterpart of the otherthat is, thereare two pivot-posts 6, over either of which the dog 3 may be hung toswing from either side of the door, according to the way the door turns.The upper and lower edges of the straight portion of the plate A areprovided with the respective flanges 7 8, which serve the double purposeof stops to limit the movement of the dog and of a housing for thelatter. The lower flanges 8 extend but a short distance along eitherside of the plate to allow the dog to drop, and either flange is adaptedto the length of the slot at and serves as a stoplengaging the rear wallof the slot to prevent the dog dropping too far. The doorjamb isprovided with a suitable projection or button 9, with which the end ofthe arm 5 is adapted to engage, when the door is closed,

to raise the dog and release the latch.

If desired, thedevice maybe incorporated in a lock and form a partthereof, as in Figs. 6 and 7. In this case the dog 3 is pivoted to theinner side of the end wall of the lock-case B and adapted to engage anotch 10 in the latch 2 when the latter is retracted. The dog 3 has anarm 5 projecting out through the lock-casing and extending nearly flushwith the inner surface of the door-frame. When the knob is turned toopen the door, the dog drops into the notch 10 and holds the latch inretracted position until the door is closed again to bring the end ofthe arm 5 against the projection or button on the doorjamb, whichprojection extends just far enough into the opening in the door in whichthe arm is incased to move the arm and operate the dog to release thelatch. Besides holding the latch back and leaving the edge of the doorsmooth, it will be seen that the door will close much more easily thanwhere the latch must be retracted by the frictional engagement of thelatch with the keeper.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-- 1. The combination with a door-latch, ofa plate,bent to extend transversely across and fit over the edges of the doorjust above the latch, and a pivoted plate carried by and within the bentplate whereby it may drop below the lower edge of the latter and infront of the latch, to hold the latter in a retracted position, and anarm on the pivoted plate to engage the door-jamb to lift the plate whenthe door is closed.

2. The combination of a'housing-plate having stop means at oppositeportions, and a drop-plate within and carried by the housing I CC andpivoted interchangeably at opposite portions of the latter so as toengage either of the stop means, said housing adapted to fit a door andsaid drop-plate to operate acrossthe path of the door-latch.

3. The combination with a door-latch, of a flanged plate seen redtransversely across the edge of the door, a drop-plate pivotedinterchangeably at either end of said first-named plate, and actuatingmeans upon said dropplate engaging the jamb of the door.

4. In a device of the character described, the combination of a platehaving means by which it may be secured to the edge of a door, areversible dog pivoted on the inner side of said plate, and parallelflanges on the ANDREW WILLIAM LIVINGSTON.

Witnesses:

HENRY C. DROGER, JAMES L. KING.

